scholarly journals Map Sensitivity vs. Map Dependency: A Case Study of Subway Maps’ Impact on Passenger Route Choices in Washington DC

2017 ◽  
Vol 7 (4) ◽  
pp. 72 ◽  
Author(s):  
John Xu
Keyword(s):  
Washington Dc ◽  
Route Choices

Source Theatre Company and the Mandate of the NEA: a Case Study

1995 ◽  
Vol 11 (42) ◽  
pp. 128-134
Author(s):  
Mary C. Resing
Keyword(s):  
Public Funding ◽  
The United States ◽  
National Endowment ◽  
Washington Dc ◽  
The Public ◽  
Chapel Hill ◽  
The Arts ◽  
Theatre Company ◽  
The University

The controversy in the United States surrounding the funding of ‘offensive‐ and ‘pornographic‐ works by the National Endowment of the Arts (NEA) has centered on whether or not the organization should espouse a morally conservative outlook in regard to the public funding of artistic works. However, the NEA arguably already pursues conservative policies rooted in its vision of the form, function, and outlook of the arts it exists to serve. The appointment of the actress Jane Alexander as chair of the NEA may have indicated that the organization would become more liberal in its moral stance, but the question remains: can government-supported art be anything but conservative? The following is a case study of one theatre's relationship to the NEA in the context of the Washington, DC, theatre community. The author, Mary C. Resing, is a former business manager of New Playwrights' Theatre in Washington, DC, and a former grant writer at the University of North Carolina at Chapel Hill. She is currently working on her dissertation on the actress-manager Vera Kommissarzhevskaia.

scholarly journals Siting Background Towers to Characterize Incoming Air for Urban Greenhouse Gas Estimation: A Case Study in the Washington, DC/Baltimore Area

2018 ◽  
Vol 123 (5) ◽  
pp. 2910-2926 ◽  
Author(s):  
K. Mueller ◽  
V. Yadav ◽  
I. Lopez‐Coto ◽  
A. Karion ◽  
S. Gourdji ◽  
...  
Keyword(s):  
Greenhouse Gas ◽  
Washington Dc

scholarly journals The Effects of the Emission Cost on Route Choices of International Container Ships

2016 ◽  
Vol 2016 ◽  
pp. 1-13
Author(s):  
Hyangsook Lee ◽  
Kang-Dae Lee ◽  
Sangho Choo
Keyword(s):  
Air Pollution ◽  
Cost Function ◽  
Network Model ◽  
Transport System ◽  
Environmental Effects ◽  
Transportation Cost ◽  
The World ◽  
Route Choices ◽  
Ocean Carriers

Maritime freight shipping has increased significantly and air pollution from international ships has grown accordingly, having serious environmental effects all over the world. This paper analyzes the effects of the emission cost on ocean route choices, focusing on international container ships. First, the paper formulates a freight network model that captures decisions and interactions of ocean carriers and port terminal operators in the maritime freight transport system. Then, the emission cost is calculated based on an activity-based approach as a component of the ocean transportation cost function. A case study is examined to find if the emission cost affects ocean route choices. The results indicate that the optimal ocean route and transportation cost are changed distinctively due to the emission cost. The research discusses how the emission cost plays a role in route changes and why ocean carriers have to consider these costs in their routing decisions.

scholarly journals Urban Bike Lane Planning with Bike Trajectories: Models, Algorithms, and a Real-World Case Study

2021 ◽  
Author(s):  
Sheng Liu ◽  
Zuo-Jun Max Shen ◽  
Xiang Ji
Keyword(s):  
Real World ◽  
Smart City ◽  
Utility Functions ◽  
Mixed Integer ◽  
Planning Problem ◽  
Planning Model ◽  
Trajectory Data ◽  
Bike Sharing ◽  
Route Choices

Problem definition: We study an urban bike lane planning problem based on the fine-grained bike trajectory data, which are made available by smart city infrastructure, such as bike-sharing systems. The key decision is where to build bike lanes in the existing road network. Academic/practical relevance: As bike-sharing systems become widespread in the metropolitan areas over the world, bike lanes are being planned and constructed by many municipal governments to promote cycling and protect cyclists. Traditional bike lane planning approaches often rely on surveys and heuristics. We develop a general and novel optimization framework to guide the bike lane planning from bike trajectories. Methodology: We formalize the bike lane planning problem in view of the cyclists’ utility functions and derive an integer optimization model to maximize the utility. To capture cyclists’ route choices, we develop a bilevel program based on the Multinomial Logit model. Results: We derive structural properties about the base model and prove that the Lagrangian dual of the bike lane planning model is polynomial-time solvable. Furthermore, we reformulate the route-choice-based planning model as a mixed-integer linear program using a linear approximation scheme. We develop tractable formulations and efficient algorithms to solve the large-scale optimization problem. Managerial implications: Via a real-world case study with a city government, we demonstrate the efficiency of the proposed algorithms and quantify the trade-off between the coverage of bike trips and continuity of bike lanes. We show how the network topology evolves according to the utility functions and highlight the importance of understanding cyclists’ route choices. The proposed framework drives the data-driven urban-planning scheme in smart city operations management.

Excellent acoustics and a low RT? A case study of the recent renovation of the Kennedy Center Concert Hall, Washington, DC

1999 ◽  
Vol 105 (2) ◽  
pp. 987-987
Author(s):  
Christopher Jaffe ◽  
Paul Scarbrough ◽  
Russell Cooper ◽  
Pamela Clements
Keyword(s):  
Washington Dc ◽  
Concert Hall
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